Why do people usually notify the user that they have upvoted their question or answer by adding "+1" to their comment? Is this really necessary?

I recently left a very positive comment on a question and upvoted it but I "forgot" the +1. I got a timely reply with a request that I upvote the question (which I already did of course). Fishing for votes is probably something for another post...

Anyways:

Isn't implied that you have voted up/down when the tone of your comment is strong one way or the other?... Well, not necessarily - I understand that. However, it's common to see users accuse each other for downvoting if they leave a negative comment - which is often not the case (different user downvoted and didn't comment). So, it seems to be implied on negative comments more often than positive ones.

Isn't this supposed to be "private" information? I'm new here so I have no idea. I do understand the value of leaving a helpful comment on a piece of bad content, but is it expected that I constantly point out "+1" or "-1", and why do people do this in the first place?

EDIT: Apparently I need to clarify that I do know that this indicates a vote up or down.
+1 = Vote Up, -1 = Vote Down - Rite Gaiz?

%1 - Pekka I understand what it means, I'm asking why people do it, all the time, and if it's expected.
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Wesley MurchApr 12 '11 at 21:12

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I wouldn't say it's expected at all, to date I think I've left about 3 "+1" comments, (1% of my upvotes)- I've always added the "why I thought so" - if I read an answer by someone, which has a lot of votes.. well that could just because (maybe it was accepted early.. who knows if it's a fairly recent Q&A), if I see a +1 comment from a high rep user that will re-inforce that the votes were at least deserved and they might've answered the same way, but couldn't without duplication. Just do what you feel, you had no need to go back and explain yourself, vote how you want! explain IF you want
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clairesuzyApr 12 '11 at 21:36

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@clairesuzy: -1 This is answer not comment! ;) I felt the need to explain that I did vote up because I felt like the guy thought I was a jerk, and I can't have that - not on the internet!!
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Wesley MurchApr 12 '11 at 21:39

@Madmartigan -1 to you too ;) I did smile though.. absolutely can't have that on't interwebz
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clairesuzyApr 12 '11 at 21:46

No, it is not expected and should not be expected behavior. It's mostly the easiest way for some users to shortcut just saying "I upvoted you", because some users feel like they should let the world know.

Votes are anonymous. We can both elect to vote without commenting and comment without voting. Some people get perplexed when they see certain votes, and so other users started to use this kind of message to indicate their own stance. The unfortunate consequence is that by now, a lot of users start expecting a correlation between votes and comments, when honestly it doesn't exist. Just keep to your own practices, and you can typically ignore any "upvote requests" that occur because you left an otherwise supportive comment that did not indicate any such action.

Sometimes the tone can indicate what one is voting, but honestly given the lack of any real connection, it's simply better to avoid any assumptions on what a user has voted. One can be very sincere while still downvoting a complete junk answer.

Years and years ago, I read a SciFi shortstory where the plot culminated on humanity developing a form of telepathy such that everyone could tell what everyone else was thinking. The author proposed that this would lead to a new age of peace and harmony, as this trait would make it impossible to not empathize with your fellow man...

...I abandoned pulp SciFi soon after this. Green alien women with funny accents but otherwise perfect English were one thing, but you can only suspend disbelief so far.

My observation is that feedback - especially negative feedback - generally requires a bit of care if it is to be both useful and palatable. You may well be thinking, "Oh no, not this stupid answer again" while clicking that down-vote button, or "Squee!" while hitting up-vote... But you're better off not putting that in a comment. Voting doesn't require you to engage the little diplomat in your brain, but commenting probably should...

And once you have formulated a useful, constructive comment, putting that little number in front of it doesn't do anything for it besides prejudice the reader before he has time to evaluate your words.

In short, I've seen it start plenty of arguments. I've seen it throw gasoline on a smoldering fire, kick a hibernating bear in the 'nads, and beat Little Timmy with his own cane. I don't recall ever seeing anything positive come out of it.

And any user who would accuse you of down-voting or plead with you to up-vote is someone you should ignore. Voting is a personal matter, a private message from you to the system. It's not for anyone else to dictate how your votes should be cast.

+1. I however fear that the ability to read others' thoughts would only display the stupidity of humanity. Remember that movie "A Space Travesty" with Leslie Nielsen when tried that mind-reading device connected to a TV? "Richard, if you don't stop pulling your thing you gonna go blind! - But I like pulling on it mom! - Mrs. Dicks, your son is rapidly losing sight and we don't know why...".
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user136634Apr 12 '11 at 22:16

I have often put "-1" in front of my down-vote-comment simply to avoid seeming like I am trying to hide the fact that I did it. I might reconsider this though...
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NickCApr 13 '11 at 4:52

+1 Squeee!!! Srsly though, great answer, thanks for this. I completely agree and I'm glad that this is the expected behavior. I know what you mean about making your votes public leading to poor behavior, and I think it also influences other votes more than seeing a high number of votes alone.
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Wesley MurchApr 13 '11 at 18:03

For emotional reasons when you just can't help but not keep quiet and express your strong agreement, satisfaction or perhaps the other way around

To build up supportive personal relationships on a subconscious level, which is not possible with anonymous voting. This would however require a history of "+1" comments addressed regularly to the same individuals to get noticed and perceived as "friends".

Both of these seem like the kind of behavior that is generally discouraged. #1: If it's attached to a useful comment - sure, but if it IS the comment then why bother burying other comments that have value to readers? #2: Seems like it would lead people to upvote material simply because they are friends with the user. Or downvotes if not friends. Either way it seems like it would lead to voting based less on content and more on who is your buddy. Do I need another read through the FAQ/guidelines? This is an accurate answer BTW. +1 (I voted for you)
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Wesley MurchApr 12 '11 at 21:31

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Well what can I say. Even in this virtual environment people stay humans with their personal notions, contradictions, emotions and passions. No FAQ/guidelines can change people. Countries, cultures and civilizations have tried for millenia to change people with their morals ans laws and have failed. What is to expect of a short FAQ?
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user136634Apr 12 '11 at 21:49

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+1 would you accept to be my friend?
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user150926Apr 12 '11 at 21:52

Err no that's not what I meant. I meant this: Are the 2 points in my last comment accurate or not? I'm not trying to change the world, just trying to learn how to behave on the internet. I see from the question Arjan linked to that all the +1s are being considered noise and actually somewhat harmful to the site.
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Wesley MurchApr 12 '11 at 21:53

On a side note, I had an idea of a year ago or more to add a tab to the profile page with one's buddies. I'm sure people would have loved it... but perhaps not the folks running the place.
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user136634Apr 12 '11 at 21:56

@Developer Art: that's probably too much, but I agree that more socialization may be the missing thing here. At least, I share your feeling.
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user150926Apr 12 '11 at 21:59

@Madmartigan: I think you are correct with your judgment. It's been that attitude since the beginning that the focus is primarily on the questions and answers while the users are not that important. Therefore any manifestation of social space, personal communication, interaction or behavior not directly related to asking and answering is undesired and unwelcome. However the voting system contradicted that position. Obviously, you can't have a community-driven space without the community.
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user136634Apr 12 '11 at 22:04

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@Developer Art @Pierre 303 - Not sure what a 2 week user's input is worth but one of the things I like is the lack of social fluff. There are other sites for that, and it's easy enough to be buddies without making it official via SO Friend Request. The moment I see Friends Count on my profile I am outta heere.. BTW was typing during your last comment, +1 for typing at the same time!
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Wesley MurchApr 12 '11 at 22:06